At first I thought that my computer wasn't keeping track of the updates and would "forget" that it updated and repeat. I made sure that the cookies were kept from mcafee. I kept seeing an updated DAT file and was unsure of its purpose. Thanks ex_brit for the information concerning the update frequency. I had already set the system to update manually and still was frustrated . Like the previous person, my computer was spending time and memory on the update process. Thanks.